EP 0547364 A2 19930623 - Method and apparatus for measuring irregular tread wear.
Title (en)
Method and apparatus for measuring irregular tread wear.
Title (de)
Verfahren und Vorrichtung zur Messung unregelmässigen Laufflächenverschleisses.
Title (fr)
Procédé et dispositif pour mesurer l'usure irrégulière de la surface de roulement.
Publication
Application
Priority
US 80769191 A 19911216
Abstract (en)
An apparatus and technique for measuring and analyzing the tread wear of a pneumatic tire. The tire is indexed about its axis. Between the indexing steps, a laser scanner obtains data from the tread surface. This data is normalized to eliminate any out-of-roundness of the tire data. Noise spikes are removed and replaced with values attributable to valid data. From the data, a reference curve corresponding to a lateral sector of the tire is devised. The data from actual lateral sectors is then compared to the reference curve by a curve-fitting process and the deviation between the actual data and the reference curve establishes the degree of irregular wear of the tire at that lateral point. <IMAGE>
IPC 1-7
IPC 8 full level
B60C 11/24 (2006.01); G01B 11/24 (2006.01); G01M 17/02 (2006.01)
CPC (source: EP KR US)
G01B 11/24 (2013.01 - EP US); G01M 17/027 (2013.01 - EP US); G01N 27/00 (2013.01 - KR)
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
EP 0547364 A2 19930623; EP 0547364 A3 19930818; CA 2085562 A1 19930617; JP 3274729 B2 20020415; JP H05264407 A 19931012; KR 100266394 B1 20001002; KR 930013721 A 19930722; US 5249460 A 19931005
DOCDB simple family (application)
EP 92119107 A 19921107; CA 2085562 A 19921216; JP 35213092 A 19921210; KR 920022055 A 19921123; US 80769191 A 19911216